

4)The cost price of an article is Rs 20 and selling price is Rs 21. Find the profit %.

To calculate the profit percentage, we use the following formula:

\[
\text{Profit \%} = \left( \frac{\text{Selling Price} - \text{Cost Price}}{\text{Cost Price}} \right) \times 100
\]

Here:
- Cost Price (C.P.) = Rs 20
- Selling Price (S.P.) = Rs 21

Now, substitute these values into the formula:

\[
\text{Profit \%} = \left( \frac{21 - 20}{20} \right) \times 100 = \left( \frac{1}{20} \right) \times 100 = 5\%
\]

So, the profit percentage is **5%**.

Do you need more details or have any questions?

Here are 5 related questions to deepen your understanding:
1. If the cost price is Rs 30 and selling price is Rs 33, what is the profit percentage?
2. What would be the loss percentage if the selling price is Rs 18 instead of Rs 21?
3. How would you calculate the profit percentage if multiple items are sold at different prices?
4. What happens to the profit percentage if the selling price is doubled but the cost price remains the same?
5. Can profit percentage be calculated using a discount? If so, how?

**Tip:** Always check if your selling price is higher or lower than the cost price to determine if it's a profit or a loss situation.

The cost price of an article is Rs 20 and selling price is Rs 21. Find the profit %.

Learn how to calculate the profit percentage when the cost price is Rs 20 and the selling price is Rs 21. This step-by-step guide uses the profit percentage formula to show how a 5% profit is achieved. Suitable for students in Grades 6-8.

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